CA1090476A - Apparatus for word synchronization in an optical communication system - Google Patents

Apparatus for word synchronization in an optical communication system

Info

Publication number
CA1090476A
CA1090476A CA265,249A CA265249A CA1090476A CA 1090476 A CA1090476 A CA 1090476A CA 265249 A CA265249 A CA 265249A CA 1090476 A CA1090476 A CA 1090476A
Authority
CA
Canada
Prior art keywords
binary
flip
pulse
signal
digital
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA265,249A
Other languages
English (en)
French (fr)
Inventor
Darrell D. Sell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA1090476A publication Critical patent/CA1090476A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/245—Testing correct operation by using the properties of transmission codes
    • H04L1/247—Testing correct operation by using the properties of transmission codes three-level transmission codes, e.g. ternary
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
CA265,249A 1975-12-10 1976-11-09 Apparatus for word synchronization in an optical communication system Expired CA1090476A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US639,374 1975-12-10
US05/639,374 US4006304A (en) 1975-12-10 1975-12-10 Apparatus for word synchronization in an optical communication system

Publications (1)

Publication Number Publication Date
CA1090476A true CA1090476A (en) 1980-11-25

Family

ID=24563834

Family Applications (1)

Application Number Title Priority Date Filing Date
CA265,249A Expired CA1090476A (en) 1975-12-10 1976-11-09 Apparatus for word synchronization in an optical communication system

Country Status (9)

Country Link
US (1) US4006304A (it)
JP (1) JPS5272147A (it)
BE (1) BE849174A (it)
CA (1) CA1090476A (it)
DE (1) DE2656054C2 (it)
FR (1) FR2335103A1 (it)
GB (1) GB1545967A (it)
IT (1) IT1072202B (it)
NL (1) NL7613582A (it)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE393012B (sv) * 1976-04-15 1977-04-25 Ericsson Telefon Ab L M Optisk mottagare
US4117470A (en) * 1976-10-08 1978-09-26 Data General Corporation Data bit compression system
FR2448262A1 (fr) * 1979-01-30 1980-08-29 Lyonnaise Transmiss Optiques Procede de transmission serie d'informations binaires et dispositifs pour sa mise en oeuvre
DE2944459C2 (de) * 1979-11-03 1984-04-26 ANT Nachrichtentechnik GmbH, 7150 Backnang Verfahren zum Übertragen von Bipolarsignalen mittels eines optischen Senders
US4317236A (en) * 1980-02-25 1982-02-23 Bell Telephone Laboratories, Incorporated Laser digital transmitter
JPS56164653A (en) * 1980-05-23 1981-12-17 Nippon Telegr & Teleph Corp <Ntt> Block synchronizing circuit for 1b2b code
DE3044620A1 (de) * 1980-11-27 1982-07-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Digitales nachrichtenuebertragungssystem
NL8101666A (nl) * 1981-04-03 1982-11-01 Philips Nv Systeem voor het wederzijds synchroniseren van twee aktieve deelinrichtingen.
DE3125017A1 (de) * 1981-06-25 1983-01-05 Siemens AG, 1000 Berlin und 8000 München Verfahren zur signalisierung im zuge der uebertragung digitaler informationen zwischen digital arbeitenden einrichtungen
US4397042A (en) * 1981-07-22 1983-08-02 Sumitomo Electric Industries, Ltd. Optical modulation/demodulation system
US4524462A (en) * 1982-06-24 1985-06-18 Italtel Societa Italiana Telecomunicazioni S.P.A. System for jointly transmitting high-frequency and low-frequency digital signals over a fiber-optical carrier
JPS59135939A (ja) * 1983-01-25 1984-08-04 Canon Inc 光通信方式
FR2542531B1 (fr) * 1983-03-09 1988-05-20 Telephonie Ind Commerciale Procede et dispositifs de transcodage d'informations binaires pour transmission multiplexe temporelle
JPS59211348A (ja) * 1983-05-17 1984-11-30 Nec Corp デイジタル通信用回線切替方式
US4516245A (en) * 1983-06-22 1985-05-07 Gte Automatic Electric Inc. Digital span transmission circuit
US4654844A (en) * 1984-09-04 1987-03-31 United Technologies Corporation Bi-directional coupler
DE3616276A1 (de) * 1986-05-14 1987-11-19 Wegner Helmut Stoersicheres optisches uebertragungssystem fuer die studio- und heimstudiotechnik
JP2988300B2 (ja) * 1995-01-27 1999-12-13 日本電気株式会社 バイポーラクロック擾乱検出回路
US5737366A (en) * 1995-12-29 1998-04-07 Lucent Technologies Inc. Method and apparatus for receiving line encoded bursts of information
US5760941A (en) * 1996-02-29 1998-06-02 Rice University System and method for performing optical code division multiple access communication using bipolar codes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3648237A (en) * 1969-02-28 1972-03-07 Ibm Apparatus and method for obtaining synchronization of a maximum length pseudorandom sequence
US3927401A (en) * 1972-11-24 1975-12-16 Gen Motors Corp Method and apparatus for coding and decoding digital data
US3903504A (en) * 1974-03-20 1975-09-02 Singer Co Binary phase digital decoding system
US4001578A (en) * 1975-08-01 1977-01-04 Bell Telephone Laboratories, Incorporated Optical communication system with bipolar input signal

Also Published As

Publication number Publication date
DE2656054C2 (de) 1985-09-12
IT1072202B (it) 1985-04-10
JPS5272147A (en) 1977-06-16
GB1545967A (en) 1979-05-16
BE849174A (fr) 1977-04-01
FR2335103B1 (it) 1982-01-22
NL7613582A (nl) 1977-06-14
US4006304A (en) 1977-02-01
DE2656054A1 (de) 1977-06-23
FR2335103A1 (fr) 1977-07-08

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Legal Events

Date Code Title Description
MKEX Expiry